The dwarf planet 1 Ceres is in conjunction with the Sun at 5 P.M. EST today. While this means we can't see Ceres for now, we ...

Sixty-seven orbits of Jupiter. Two close-ups of its moon Europa—where astrobiologists think microbial life may exist—21 flybys of far-out Callisto, and nine months in orbit around the biggest ...

Because this area and others were disappointing to many fans, The Callisto Protocol had an opportunity to upstage it and earn a positive comparison for itself. The Callisto Protocol’s rigidly ...

shifts from half-full to a crescent and reaches peak brightness just after February’s full moon. Jupiter: Second brightest in the east, its four moons—Ganymede, Callisto, Europa, and Io—are ...

shifts from half-full to a crescent and reaches peak brightness just after Februarys full moon. Jupiter: Second brightest in the east, its four moonsGanymede, Callisto, Europa, and Ioare visible ...

Mighty Jupiter stands high in the east at sunset, dominating the stars of Taurus the Bull as they begin to appear in the ...

and Callisto. The Moon is non-luminous, meaning that it does not produce light. We see the Moon because it reflects light from the Sun, and half of the Moon’s surface is always illuminated.

Callisto seems the most challenging to write ... The ancient, unchanging moon gets a more archaic sound that evokes an older world. “I’m not a subtle composer,” said Dexter.